Massive Leak Reveals 25 Years of Halo's Hidden Content

Over 100GB of cut and unfinished Halo material, including a playable 1999 Macworld demo, has surfaced online following a collaboration with modders.

The leak includes over 25 years of Halo content, such as early builds, cut multiplayer maps, and unused assets from the franchise's history.
A playable version of the original 1999 Macworld demo, showcasing Halo as a third-person game for Mac, has been made available for the first time.
The leaked files, totaling more than 100GB, stem from a collaboration between Halo Studios and the Digsite modding team to restore cut content, though Digsite denies responsibility for the leak.
Several members of the Digsite team recently quit over disputes related to unpaid work and lack of resources while working with Halo Studios on restoration projects.
The legitimacy of the leaked content has been confirmed, and fans are now exploring its potential for modding and preservation, though Microsoft’s stance on its use remains unclear.